See-through minispheres reveal that look-alike cancer drugs are not alike at all

Cancer cells in the body grow in clumps, not in the flat layers drug tests usually use — and that difference hides things. Researchers at Uppsala University grew bowel cancer cells as tiny spheres, made them transparent with a simple sugar-and-glycerol solution, and photographed individual cells inside. Two widely used drugs, 5-fluorouracil and olaparib, looked nearly identical in flat cultures but behaved differently in 3D: surprisingly, 5-fluorouracil did less DNA damage yet stopped cells dividing better, by switching on the cell's p53 stress response more strongly. Published in Nature Communications, the method was also run successfully with AstraZeneca outside the lab that invented it, and all images, data and code are openly available — a more honest rehearsal before drugs ever reach patients.

SDG 3 · Good health and well-being — Mechanism: tech innovation